reporter: in a candid interview with britain's channel 4 news, the megastar, known for "salt" and "tomb raider" is speaking in the past tense. saying she would give up her career for her family. >> i've had great experience. i'd be able to tell stories. and i've gotten to do things for fun. but if it went away tomorrow, i'd be very happy to just be home with my children. >> reporter: a lot has changed recently for jolie and pitt. in april, the paparazzi-plagued pair finally got engaged, after seven years ago and adopting three children. they've taken on new humanitarian projects, founding the jolie-pitt foundation, which fights disease and poverty in cambodia. pitt also told elizabeth vargas that he is changing his focus. >> everything is allocation. spending my time wisely and doing the things that are important to me and spending the time i need with family. >> reporter: jolie isn't the other mother looking at motherhood. you make choices as a wife and mother, don't you? you can't have it all. >> the irony, of course, is that these stars have what appears to be very glamorous lifestyles. all